Bug 1845457 - Preselect number of headers to download. r=mkmelin

Differential Revision: https://phabricator.services.mozilla.com/D184559

--HG--
extra : amend_source : 74ce256f73cc44ab51ac2138372ffb7456dd274f

mailnews/news/content/downloadheaders.js

@@ -48,6 +48,8 @@ function OnLoad() {
   markreadElement = document.getElementById("markread");
   markreadElement.checked = nntpServer.markOldRead;
 
+  setupDownloadUI(true);
+
   return true;
 }
 
@@ -86,4 +88,5 @@ function setupDownloadUI(enable) {
 
   checkbox.disabled = !enable;
   numberFld.disabled = !enable;
+  numberFld.select();
 }

mailnews/news/content/downloadheaders.xhtml

@@ -43,6 +43,7 @@
         label="&all.label;"
         accesskey="&all.accesskey;"
         oncommand="setupDownloadUI(false);"
+        value="all"
       />
       <separator class="thin" />
       <hbox align="center">
@@ -53,6 +54,7 @@
           accesskey="&download.accesskey;"
           oncommand="setupDownloadUI(true);"
           aria-labelledby="some number headers"
+          value="some"
         />
         <html:input
           id="number"